Anthelmintic



Patented Feb. 1, 1927..

UNITED STATES I talent PATENT OFFICE.

HERMANN \VEYLAND, 0F ELBERFELD, GERMANY, ASSIGNOR TO WINTHROP CHEMI- CAL COMPANY, INC., 01 NEW YORK, N. Y.

ANTHELMINTIC.

No Drawing. Application filed September 2, 1925. Scrial No. 54,133, and in Germany November 2 1, 1924.

It is already known to use the latex of certain species of Ficus, in particular of Ficus glabmta, Ficus doleam'a and similar allied bodies as an anthelmintic. The tendency of these species of latex, however, to decompose readily, as well as the imperfect meansof administering the same, due to the high content of caoutchouc, combined with poor resorption militate against their general application.

The object of the present invention is' to obviate these disadvantages; In accordance with my invention the eoagulated 'latex is exhaustively extracted with organic solvents, eare being taken to avoid an elevated temperature. The medicinally effective residue from the extraction orms a dry powder, which is soluble in water and has an extraordinarily strongdeadly' action against intestinal parasites such as worms. Instead of using the coagulated latex, the original latex itself may be extracted with organic solvents and the remaining liquid may then be evaporated while avoiding a higher temperature.

Example.

with another liquid e. g. ether,

thelmintie which is specifically effective in eliminating worms comprising extracting by means of organiesolvents the latex of Ficus and drying the resulting residue.

2. Process for the manufacture of an authelmintic which is specifically effective in eliminating worms comprising extracting by means of. organic solvents the coagulable constituents of the latex Ficus,-and drying the resulting residue.

3. An anthelminticbeing the residue of extraction, by means of organic solvents, of

-the latex of Ficus, being a friable slightly brownish colored product, showing useful anthelmintic properties.

In testimony whereof I have hereunto 5 set my hand.

HERMANN VWEYLAND. 

